*Benben is [https://pbs.twimg.com/media/CBlyuvNUAAAqw2u.jpg:orig often] [http://www.pixiv.net/member_illust.php?mode=medium&illust_id=49335129 seen] [https://pbs.twimg.com/media/B_ppqN8UwAAGvTB.jpg:orig eating] (or [http://www.pixiv.net/member_illust.php?mode=medium&illust_id=51741606 some] [http://www.pixiv.net/member_illust.php?mode=medium&illust_id=49453626 derivative] of [http://www.pixiv.net/member_illust.php?mode=medium&illust_id=49577147 eating]) [http://seiga.nicovideo.jp/seiga/im4404722 apple] pie in fanart. This most likely stems from her spellcard [[Double_Dealing_Character/Spell_Cards/Stage_4#Spell_Card_52|Music Sign "Double Score"]], as it looks like [http://www.bonappetit.com/wp-content/uploads/1999/10/five-spice-apple-pie.jpg the top crust of an apple pie].

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*Benben is often seen eating (or associated with) apple pie in fanart. This most likely stems from her [[spell card]] [[Double Dealing Character/Spell Cards/Stage 4#Spell Card 52|Music Sign "Double Score"]], as it looks like the top crust of an apple pie.

When Double Dealing Character was first announced, due to only seeing a small screenshot of Sekibanki where there was one of Sakuya Izayoi's knives next to her, some fans mistakenly speculated that she was either holding a large hammer or a sword.

Since her first appearance in the Double Dealing Character demo, she has been paired with either Keine Kamishirasawa, because both of them are 3rd Stage bosses and are half-beasts that transform in the nights of full Moon, or Momiji Inubashiri because of her being a white wolf tengu and Kagerou a werewolf (Moreover, she is sometimes depicted as a more dog-like character, just like what happens to Momiji).

She is commonly depicted as having a wolf tail in addiction to her wolf ears, despite not having a tail in her official portraits.

Comments related to Seija written on Internet sites are sometimes shown be written upside down, where it references her ability.

She's sometimes shown causing trouble for others using her ability and being a general troublemaker.

Fans tend to draw her upside-down due to her nature.

Several fanworks like to play with the idea that she says the opposite of what she thinks. For example, if she says "This is not cute at all!", then she really believes it is cute.

Some fanarts feature Seija with switched limbs - right hands and feet are on the left, and vice versa. That is suggested by the fact she appears in-game with her right hand flipped towards the player, an unnatural movement.

Seija is commonly paired with C-Moon, the Stand of Enrico Pucci from JoJo's Bizarre Adventure, who's able to inverse the surface much like her ability.

Ryuuko Matoi from Kill la Kill has a similar hairstyle, drawing an association between the two, sometimes showing the two together or, to the alternative, switching clothes. Along that line, Ryuko is considered to be a "chaotic" sort of character, although she doesn't have any sort of malicious intent like Seija does.

Shinmyoumaru has only been recently growing up her way through the fanbase due to Double Dealing Character being a recent release.

Due to making the player grow in size in Double Dealing Character, Shinmyoumaru can make other things grow or shrink in size, such as Sakuya Izayoi's chest.

She is mostly drawn from a size range between the palm of a hand up to the knee length of an adult.

There's a tendency that the gesture and behaviour to be very random due to being child-like.

Since her ancestor exterminated an oni, some fans believe that she would have a conflictual relationship with Suika Ibuki and Yuugi Hoshiguma, and is sometimes seen fighting with one or both of them. In comical situations she would use the Mallet's power to "nullify" Suika Ibuki's ability of becoming a giant, much to the oni's surprise.